CVE-2026-32135

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Versions prior to 0.24.11 have a remotely triggerable heap buffer overflow in the `uri_param_parse` function of NanoMQ's REST API. The vulnerability occurs due to an off-by-one error when allocating memory for query parameter keys and values, allowing an attacker to write a null byte beyond the allocated buffer. This can be triggered via a crafted HTTP request. Version 0.24.11 patches the issue.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nanomq/nanomq/commit/69a97b3b39cc218f044f1c8896f4d3d8757bb394	Patch
https://github.com/nanomq/nanomq/issues/2247	Issue Tracking
https://github.com/nanomq/nanomq/security/advisories/GHSA-6w96-9qw7-m599	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:*

History

22 Apr 2026, 17:32

Type	Values Removed	Values Added
First Time		Emqx Emqx nanomq
References	~~() https://github.com/nanomq/nanomq/commit/69a97b3b39cc218f044f1c8896f4d3d8757bb394 -~~	() https://github.com/nanomq/nanomq/commit/69a97b3b39cc218f044f1c8896f4d3d8757bb394 - Patch
References	~~() https://github.com/nanomq/nanomq/issues/2247 -~~	() https://github.com/nanomq/nanomq/issues/2247 - Issue Tracking
References	~~() https://github.com/nanomq/nanomq/security/advisories/GHSA-6w96-9qw7-m599 -~~	() https://github.com/nanomq/nanomq/security/advisories/GHSA-6w96-9qw7-m599 - Exploit, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
CPE		cpe:2.3:a:emqx:nanomq::::::::

20 Apr 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-20 20:16

Updated : 2026-04-22 17:32

NVD link : CVE-2026-32135

Mitre link : CVE-2026-32135

CVE.ORG link : CVE-2026-32135

JSON object : View

Products Affected

emqx

nanomq

CWE

CWE-122

Heap-based Buffer Overflow

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